The Hose,air Duct, cataloged under National Stock Number 4720-01-187-9619, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Herbert Cooper Co Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-187-9619 |
| Primary Part Number | HC6S |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Herbert Cooper Co Inc |
| Status | ACTIVE |
| Measuring Method and Length | 6.000 INCHES NOMINAL OVERALL IN |
| Connection Style | ROUND FIRST END |
| Connection Type | PREFORMED FIRST END |
| Style Designator | FULLY CONVOLUTED |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.430 INCHES NOMINAL IN |
| Inside Diameter | 0.880 INCHES NOMINAL FIRST END IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| HC6S PRIMARY | Herbert Cooper Co Inc (USA) |
| 12337671 | Herbert Cooper Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 4720011879619 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 12337671 | 7/2 Vendor item drawing reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 4720-01-187-9619 is a Hose,air Duct, manufactured by Herbert Cooper Co Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-187-9619 has 2 manufacturer part numbers on file: HC6S (Herbert Cooper Co Inc), 12337671 (Herbert Cooper Co Inc).
1 possible match (shared part number, not a government interchangeability claim): 5895-01-654-3572. Verify interchangeability with system specifications before substitution.
Key specifications for HC6S: Measuring Method and Length: 6.000 INCHES NOMINAL OVERALL IN; Connection Style: ROUND FIRST END; Connection Type: PREFORMED FIRST END; Style Designator: FULLY CONVOLUTED. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.